The Motor Effect (AQA GCSE Physics): Flashcards
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Practise the cards
13 cards from this deck
What electric current creates around conductors
What electric current creates around conductors
Magnetic fields
Shape of magnetic field around straight wire
Shape of magnetic field around straight wire
Concentric circles
Right-hand rule: thumb direction shows
Right-hand rule: thumb direction shows
Direction of conventional current
Right-hand rule: fingers curl to show
Right-hand rule: fingers curl to show
Direction of magnetic field lines
Type of current used with right-hand rule
Type of current used with right-hand rule
Conventional current (positive to negative)
How current size affects magnetic field strength
How current size affects magnetic field strength
Directly proportional: (double current = double field)
How distance affects magnetic field strength
How distance affects magnetic field strength
Inversely proportional: (double distance = half field)
Definition of solenoid
Definition of solenoid
Long coil of insulated conducting wire
Type of magnetic field inside a solenoid
Type of magnetic field inside a solenoid
Strong and uniform
What a solenoid's field pattern resembles
What a solenoid's field pattern resembles
Bar magnet with N and S poles
Effect of increasing current in solenoid
Effect of increasing current in solenoid
Increases magnetic field strength
Effect of adding more turns to solenoid
Effect of adding more turns to solenoid
Increases magnetic field strength
Effect of iron bar inside solenoid
Effect of iron bar inside solenoid
Creates electromagnet, much stronger field